diff --git a/modules/30_crop/endo_apr21/equations.gms b/modules/30_crop/endo_apr21/equations.gms
index bb8f0afae5..a9abc49e6c 100644
--- a/modules/30_crop/endo_apr21/equations.gms
+++ b/modules/30_crop/endo_apr21/equations.gms
@@ -83,4 +83,4 @@
 *' regional cropland area is calculated for the cropland growth constraint
  q30_crop_reg(i2) .. v30_crop_area(i2)
    =e=
-   sum(cell(i2,j2), vm_land(j2,"crop"));
+   sum((cell(i2,j2), kcr, w), vm_area(j2,kcr,w));
diff --git a/modules/30_crop/penalty_apr22/equations.gms b/modules/30_crop/penalty_apr22/equations.gms
index a056aff463..da1b55f9c0 100644
--- a/modules/30_crop/penalty_apr22/equations.gms
+++ b/modules/30_crop/penalty_apr22/equations.gms
@@ -114,4 +114,4 @@ q30_rotation_penalty(i2) ..
 *' regional cropland area is calculated for the cropland growth constraint
  q30_crop_reg(i2) .. v30_crop_area(i2)
    =e=
-   sum(cell(i2,j2), vm_land(j2,"crop"));
+   sum((cell(i2,j2), kcr, w), vm_area(j2,kcr,w));
diff --git a/modules/30_crop/rotation_apr22/equations.gms b/modules/30_crop/rotation_apr22/equations.gms
index f3e1302b43..0ffafca291 100644
--- a/modules/30_crop/rotation_apr22/equations.gms
+++ b/modules/30_crop/rotation_apr22/equations.gms
@@ -95,4 +95,4 @@
 *' regional cropland area is calculated for the cropland growth constraint
  q30_crop_reg(i2) .. v30_crop_area(i2)
    =e=
-   sum(cell(i2,j2), vm_land(j2,"crop"));
+   sum((cell(i2,j2), kcr, w), vm_area(j2,kcr,w));